(function(window){
  let _default = {
    version: '1.0',
    width: 1920,
    height: 1080,
    toString(num){
      return num.toString();
    },
    init(){
      return {
        vw(num){
          return toString((1/this.width/100)*num).slice(0,5)/1;
        },
        vh(num){
          return toString((1/this.height/100)*num).slice(0,5)/1;
        }
      }
    }
  }

  window.rs = _default.init();
  
})(window)